Informing humanitarians worldwide 24/7 — a service provided by UN OCHA

Japan

Japan - Volcanic activity and earthquakes (JMA, USGS, media) (ECHO Daily Flash of 4 July 2025)

  • A huge explosive eruption occurred at Shinmoedake Volcano, part of the Kirishima Volcanic Complex, southern Kyushu Island, Japan on 3 July at 6.37 UTC. The ash plume reached a height of 6.7 km above sea level.
  • The eruption generated significant ashfall, affecting the prefectures of Miyazaki and Kagoshima. Local authorities issued advisories urging residents to remain indoors due to hazardous conditions.
  • According to the Japan Meteorological Agency (JMA), the volcano’s alert level was elevated from 2 to 3, restricting access to areas near the volcano. This includes Kobayashi City, Takaharu Town, and Kirishima City in the Miyazaki and Kagoshima prefectures.
  • In addition, Akusekijima Island, Kagoshima Prefecture has experienced over 1,000 earthquakes since 21 June, resulting in the evacuation of approximately 90 residents living on the island